本文以硫酸氧钛和酚醛树脂为原料在氩气保护下高温固相合成TiC微粉.以硫酸氧钛为钛源,酚醛树脂为碳源,通过液相混合的方式提高了钛源和碳源的混合均匀性,从而有利于促进后期固相合成反应的进行,并保证产物的均一性.探讨了酚醛树脂和硫酸氧钛的高温碳热还原过程,用TG、FTIR、XRD对前躯体和碳热还原后的产物进行了表征和研究.结果表明,通过边搅拌边加热的方式可以获得硫酸氧钛和酚醛树脂的均匀混合物前驱体,该前驱体在流通的氩气环境中经1500℃碳热还原反应1h可得到物相纯净的TiC微粉,产物平均粒径为200 nm.
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